I assume (x+z')' means not ( x or (not z)). If so, then doesn't this simplify to
x'z? Then your expression simplifies to:
= x'zy'z + xy' + xz'
= x'y'z + xy' + xz'
I have a boolean function that im not sure how to solve.
im supposed to write this on disjunctive normal form.
I tried multiplying the and the term
by (z+z') and (y+y') but that makes the whole expression really long.